Product Overview

Telaire T8700 Wall Mount Humidity and Temperature Transmitters are precision instruments designed for HVAC control applications. They offer versatile analog outputs (0-5V, 0-10V, 4-20mA) and are available in display and non-display versions. Featuring a rugged capacitive sensor for 0-100% RH measurement with excellent response times, linearity, and stability, these transmitters are factory calibrated against NIST standards. The modern enclosure is made of flame retardant, UL-94V ABS plastic and offers enhanced airflow for accurate measurements. Installation is simplified with a two-piece enclosure and terminal blocks for quick wiring. The T8700 series boasts enhanced field serviceability with a replaceable RH sensor tip module, minimizing downtime and costly recalibrations. With a two-year warranty, simplified inventory, and reduced installation times, the T8700 offers a low cost of ownership and a high performance-to-price ratio.

Product Attributes

• Brand: Telaire
• Sensor Type: Capacitive polymer sensor
• Enclosure Material: Flame retardant, UL-94V ABS plastic
• Certifications: CE and RoHS compliant
• Warranty: Two years (transmitter only), one year on replaceable sensor
• Custom Branding: Available on request (subject to quantity)

Technical Specifications

Specification	Details
Product Series	T8700
Mounting Type	Wall Mount
Humidity Output Range	0% to 99% RH (non-condensing)
Temperature Output Range	0-50 C (32F to 122F)
Analog Outputs	0-5 V, 0-10 V, 4-20 mA (simultaneously available)
Temperature Sensor Options	Active and passive (Thermistor 10k II)
Power Supply Requirements	18-30 VAC RMS, 50/60 Hz, or 18-42 VDC (polarity protected)
Power Consumption	Typical 0.7 W at 24V AC RMS
Operating Temperature	32F to 122F (0C to 50C)
Operating Humidity	0 to 95% RH, non-condensing
Storage Temperature	-40F to 158F (-40C to 70C)
Flammability Classification	UL94 5VA
Thermistor Type	NTC 10 K W (passive)
Thermistor Accuracy	1C (15 to 35C)
RH Accuracy (at 25C)	2.5% RH (20 to 80% RH), 3.5% RH (80% RH)
Active Temperature Accuracy	0.8C @ 22C
Output Impedance (0-10V)	100 W
Max Load Resistance (4-20mA)	500 W
Digital to Analog Error	1%
Replaceable Sensor	Yes (RH sensor tip module, Part No. T63346)
Filter	Gas permeable, water resistant humidity sensor filter
Models	T8700-E (Euro, No Display), T8700-E-D (Euro, Display), T8700 US (US, No Display), T8700-D US (US, Display)
Display Versions	Scrolls between % Relative Humidity and Temperature (C or F)
NIST Certificate	Available at additional cost (Part no. 3PTCERT for sensor, available on complete transmitter at extra cost)